Growth of Metallic Oxide Single Crystals from Metallic Iodide Powder. -On the Growth of SnO_2 and ZnO Single Crystals-

Metallic oxide single crystals grew at lower growth temperature and the growth rate was larger. Moreover, many characteristic metallic oxide single crystals which suggested the growth mechanism were obtained in the cases of growth reaction of both SnI4 and ZnI2 with H20 Or O2 respectively. In present paper, the growth conditions and crystalline habits and the growth mechanisms of the leaf, pyramid and plate type metallic oxide single crystals, grown by vapor reaction of the metallic iodide powder are reported respectively. Concerning the plate type growth, it is interpreted by the two-step mechanism that the layer growth on the plate surfaces of the needles and whiskers begins after the oriented growth on them has finished